window.onload=function(){
	jddhShow(); //导航栏下拉信息
	head_show();
}		

function maxs(obj){
	var obj=document.getElementById("myimg");	
	obj.style.width='300px';
	obj.style.height='240px';

}
function mins(obj){
	var obj=document.getElementById("myimg");	
	obj.style.width='280px';
	obj.style.height='210px';	
}
